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Everyday Science Easy FPSC PPSC NTS Uploaded: 03 Jul 2026

Which common process happens when iron is exposed to oxygen and moisture over time forming a reddish-brown coating?

  • A Sublimation
  • B Reduction
  • C Neutralisation
  • D Oxidation forming iron oxide rust
Correct Answer: Option D — Oxidation forming iron oxide rust
Explanation:
Rusting is an oxidation process where iron reacts with oxygen and water to form iron oxide a reddish-brown substance that weakens and corrod...
Submitted by: PaperMCQs
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